Food is important for national security so we should subsidize it, but it's a cost center. It'll never drive growth.
If that's what Mistral is aiming for, it would probably be better to give up now.
If Mistral is aiming not to grow to infinity but instead to offer niche models at reasonable prices, should they give up now? I think I'm not sure what exactly you're saying.
There are a whole lot of commodity businesses that flourishes and that are profitable. It's true, that, yes, they will not have huge margins.
Grocery stores are like that - some of their suppliers might be subsidised but they are not, and many places they operate with typical margins in the 2% range. Discount supermarkets in the UK are operating on around 0.7% margins.
They are still huge, profitable businesses.
And they are examples of what happens when markets work.